International Journal of Mechanical Engineering and Technology (IJMET) Volume 7, Issue 2, March-April 2016, pp. 187 190, Article ID: IJMET_07_02_020 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=7&itype=2 Journal Impact Factor (2016): 9.2286 (Calculated by GISI) www.jifactor.com ISSN Print: 0976-6340 and ISSN Online: 0976-6359 IAEME Publication FOOT STEP POWER GENERATION Sarat Kumar Sahoo Assistant Professor, Department of Mechanical Engineering, GIET, Gunupur, Orissa, INDIA Shubham kumar, Pankaj Kumar Yadav, Rishav Kumar Final Year, UG student, Dept. of Mechanical Engineering, GIET, Gunupur, Orissa, INDIA ABSTRACT In this project we are generating electrical energy by means of a nonconventional method just by walking on the footsteps. Non conventional system for energies are very much required at this time. Energy generation using footsteps requires no any fuel input to generate electricity. In this project we are generating electricity just with the help of rack and pinion arrangement along with alternator and chain drive mechanism. For its proper functioning such that it converts Force into electrical energy, the mechanism consists of rack & pinion, chain drives, alternator and battery. We have discussed its various alternate applications with extension also. The power generation is much worthy but it has little initial cost effective factors. Key words: Foot Step, D.C. Generator, Rack & Pinion, Chain Drive Arrangement, LEDs. Cite this Article Sarat Kumar Sahoo, Shubham kumar, Pankaj Kumar Yadav and Rishav Kumar, Foot Step Power Generation. International Journal of Mechanical Engineering and Technology, 7(2), 2016, pp. 187 190. http://www.iaeme.com/currentissue.asp?jtype=ijmet&vtype=7&itype=2 1. INTRODUCTION Question that every time comes before every country i.e. the need of non conventional energy sources or systems. Why we need these systems and the answers are the growing consumption of energy has resulted in the country becoming increasingly dependent on fossil fuels such as coal, oil & gas. Rising prices of oil and gases and their potential shortages have raised uncertainties about the security of energy supply in future, which has serious repercussions on the growth of the national economy. The main factor is increasing use of fossil fuels also causes serious environmental problems. http://www.iaeme.com/ijmet/index.asp 187 editor@iaeme.com
Sarat Kumar Sahoo, Shubham kumar, Pankaj Kumar Yadav and Rishav Kumar Hence there is primary need to use renewable energy sources like solar, wind, tidal, biomas and energy from waste material. Now let us come to its some working principle, this device if embedded in footsteps of railway platforms, city malls, city footpaths e.t.c. can convert the weight impact of people into electrical energy. When a pedestrian will step on the top plate of this device, the plate will go down and this downward motion results in rotation of the shaft of the alternator which produces electrical energy. After removal of force the top plate returns to its original position due to springs. 2. MATERIALS AND METHODS Foot step arrangement This setup is made up of mild steel. The upper plate is fixed with the help of springs and rack & pinion. Below this plate a shaft is mounted which is connected to a dc alternator and this alternator is to the lightning LEDs. 1. FOOT STEP ARRANGEMENT RACK & PINION AND CHAIN DRIVE DC GENERATOR LEDs Specification of pinion Material : Cast iron Outside diameter : 74mm Tooth depth : 3.35mm Circular pitch : 4.6mm Module : 1.5mm Pressure angle : 21 Pitch circle Diameter : 71mm Addendum : 1.5mm Dedendum : 1.85mm Clearance : 0.37mm Specification of Rack Material : cast iron Module : 1.5mm Teeth on rack calculated for : 112mm 3. WORKING PRINCIPLE The complete fabricated model picture of Foot Step is shown below. The upper plate is mounted on two springs, the weight impact is converted into electrical power with proper control unit. The spring and rack & pinion arrangement is fixed below the foot step which is mounted on base. Spring system is used for return mechanism of upper plate after release of load. The shaft along with pinion is supported by end bearings. One end is http://www.iaeme.com/ijmet/index.asp 188 editor@iaeme.com
Foot Step Power Generation connected with small belt pulley system and on the other end a flywheel is mounted. The dc generator is rotated with the help of this belt & pulley arrangement. The flywheel is used here to maintain and increase the rpm of smaller pulley arrangement, the generator is used here is 12Volt permanent magnet DC generator. The terminal of DC generator is connected to lightning LEDs. 4. RESULTS AND DISCUSSION Figure 1 Fabricated model Output power Let, Mass of pedestrian = 65 kg Distance travelled by plate = 8cm So, work done on plate by impact =weight of body * distance = 65 * 9.81*0.1 J =63.765 J So, power output =work done/sec =63.765/60 Watts =1.06275 Watts This much power is generated just by one foot step, by calculating on an average of foot step impacts on the device we tabulated the data by taking a 100W bulb with 230V. http://www.iaeme.com/ijmet/index.asp 189 editor@iaeme.com
Sarat Kumar Sahoo, Shubham kumar, Pankaj Kumar Yadav and Rishav Kumar No. of steps Table 1 Average production of energy per unit step 5. CONCLUSION Since in this project of power generation there is not any fuel input requirement for the generation of electrical power. Thus it can also be concluded that this mode of power generation system is eco-friendly, i.e, no pollution is caused during the generation of power using this type of model. Hence due to such advantages, this system can be embedded at any of the public places like railway platforms, busy footpaths, malls etc. Implementing this system, we can easily reduce our dependency on the conventional sources of energy, thus can be considered beneficial from that point of view. ACKNOWLEDGEMENTS The authors extend their heartfelt thanks to the management and faculties of mechanical engineering department of GIET, Gunupur for their direct and indirect support towards the completion of this research work. REFERENCES Duration of lightning A 100W bulb (sec) Total energy (Watts) Energy/step 200 2.12 212.55 1.06275 500 5.31 531.375 1.06275 1000 10.62 1062.75 1.06275 2000 21.25 2125.5 1.06275 [1] B. L. Thareja, A.K.Thareja, A text book of electrical technology [2] G. R. Nagpal, Power Plant Engineering, Khanna Publishers, Delhi [3] T. Nejat Veziroygal, Alternative Energy Sources-iii, Hemisphere Publishing Co [4] V. Jose Ananth Vino, AP, Bharath University, Power Generation Using Foot Step, International Journal of Engineering Trends and Technology (IJETT) Volume1 Issue2 May 2011 [5] Ramesh. R, Udaya Kumar, K. Anandakrishnan Renewable Energy Technologies, Narosa publishing house, Madras. A. K. Sawhney, A text book of electrical, electronics, Instrumentation and Measurements [6] Barbara Keiler, Energy Alternatives, Luscentr books. Prabhu T. J. Fundamentals of Machines Design,2009 design data, PSG college of technology,2007 Bhandari V.B, Design of Machine Elements, Tata Mcgraw [7] Hill,2007 Shigley J.E and Misheka Mechanical Engineering [8] Design Mcgraw Hill,2007 Pandya and Shah Elements of Machines Design, 2000 Maitra, Handbook of gear design, Tata Mcgraw Hill,1995 [9] Gere Timoshenko, Mechanics of Materials CBS, 1997. [10] Eric Osei Essandoh, Emmanuel Yeboah Osei and Faisal Wahib Adam, Prospects of Wind Power Generation in Ghana. International Journal of Mechanical Engineering and Technology, 5(10), 2014, pp. 156 179. http://www.iaeme.com/ijmet/index.asp 190 editor@iaeme.com